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Six silver DDR4 LRDIMM sticks in a row

A-Tech

A-Tech 384GB Kit (6x64GB) DDR4 2933 ECC LRDIMM memory upgrade for Apple Mac Pro 2019

SKU CH-HRWP-PV26X

A 384GB DDR4 2933 ECC LRDIMM kit of six 64GB modules for 2019 Mac Pro 12, 16, 24 and 28-core models

  • Total capacity384 GB (6 × 64 GB)
  • Rated speedDDR4 2933 (PC4 23400)
  • ChipsetMajor Brand Chipset
  • Rated voltage1.2 V
  • Buffer typeLoad Reduced
  • Compatible systemsApple Mac Systems
  • 384 GB total capacity from six 64 GB modules
  • DDR4 2933 MHz speed with PC4-23400 rating
  • ECC Load Reduced DIMM technology for error correction
  • Designed for Apple Mac Pro 2019 tower and rack models
  • Compatible with Xeon W-3235, W-3245, W-3265, W-3275M processors

384GB DDR4 ECC LRDIMM kit for Mac Pro 2019

This 384GB kit contains six 64GB DDR4 2933MHz ECC Load Reduced DIMMs built specifically for the 2019 Mac Pro tower and rack models. It targets professionals running memory-intensive workloads on 12, 16, 24 or 28-core Xeon W processors who need the maximum supported capacity per slot. Buyers whose Mac Pro uses standard RDIMMs or requires a different speed grade cannot use this kit.

Sustained load behaviour with ECC LRDIMM topology

The Load Reduced design places a buffer on each module to reduce electrical load on the memory controller, allowing all six slots to operate at the rated 2933MHz speed under continuous heavy throughput. ECC circuitry detects and corrects single-bit errors in real time, preventing silent data corruption during long render, simulation or virtualisation sessions. The 1.20V operating voltage keeps power draw predictable across extended duty cycles.

288-pin LRDIMM form factor and Mac Pro slot layout

Each module uses the 288-pin LRDIMM form factor keyed for the Mac Pro's dedicated memory slots, ensuring correct alignment without adapters. Major-brand DRAM chips are used throughout the kit to maintain consistent timing across all six sticks. The Mac Pro 2019 architecture requires LRDIMMs for capacities above 32GB per slot, so standard unbuffered or registered DIMMs will not function in this configuration.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $1,963.99
Pricier than about 68% of the 21,161 comparable items (median $397.99).
Total capacity 384 GB (6 × 64 GB)
Higher than about 85% of the 20,941 comparable items (median 32 GB).
Price per GB $5.11 per GB
Cheaper than about 75% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameA-Tech
Product lineA-Tech DDR4 Apple Mac RAM Memory Upgrades
Total capacity384 GB (6 × 64 GB)
Performance
Rated speedDDR4 2933 (PC4 23400)
Processor
ChipsetMajor Brand Chipset
Memory
ECC supportYes
Buffer typeLoad Reduced
Power
Rated voltage1.2 V
Compatibility
Compatible systemsApple Mac Systems

Questions about this item

How much power do the 1.20V DDR4 2933 LRDIMMs draw when the Mac Pro runs sustained workloads all day?

Each module operates at 1.20 volts, the standard DDR4 voltage, and the load-reduced design reduces electrical load on the memory controller, helping keep system power draw lower than registered DIMMs at the same capacity.

Does my Mac Pro 2019 need to be the 12, 16, 24 or 28-core model with the MacPro7,1 identifier to use this 384GB kit?

Yes, the kit is validated for Mac Pro 2019 towers and rack units carrying model ID MacPro7,1 and the listed 12, 16, 24 and 28-core Xeon processors.

Can I mix these 4Rx4 ECC LRDIMMs with the original Apple memory that came in my 2019 Mac Pro?

Apple ships the 2019 Mac Pro with ECC DDR4 2933 memory; this kit matches that speed, voltage and ECC type, so the system will run all modules together at 2933MHz.

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